My "pocket pistol" has fixed sights that are hard to see in certain lighting. The PO had painted the ramp red at one time and it was all chipped off except deep in the grooves. I tried cleaning it real well and applying "orange Glow" model paint. It didn't last a day. Chipped right off. Researching, I learned there was a gunsight paint available, but reviews weren't especially good. I looked for colored epoxy and learned that most epoxies can be tinted with oil paints or pigments. Since I already had the color I wanted in the Orange Glow model paint and I had some epoxy glue (in the handy syringe dispenser), I decided to give it a try. Mixing some epoxy glue and adding a few drops of the Orange Glow paint, I dabbed it on the ramp with a tooth pick. It took about 8 hours to harden, but it did harden up nicely. The result is a nice transparent orange glow sight ramp, that is easier to see against a dark background. How long will it last? I really don't know. Since it is epoxy, I expect it to last a long time. But time will tell.